It was rare, but every now and then Piotr's perceptive nature could actually outway the doubt that had been his constant companion for as long as he could remember. Mac's reaction didn't escape Piotr's notice. It made his stomach flip a little and was more than a little encouraging.

"See. I was right. No need to be sorry." Reaching out, Piotr rested his hand lightly between Mac's shoulder blades. "We have materials, should we go to your room or mine?"